Year	Percent
1996-01-01	5.9049300000000000
1997-01-01	6.5772000000000000
1998-01-01	8.7050100000000010
1999-01-01	5.2124600000000000
2000-01-01	3.5880699999999996
2001-01-01	3.8072600000000000
2002-01-01	4.3969800000000000
2003-01-01	4.9745000000000000
2004-01-01	4.5142100000000000
2005-01-01	7.8804300000000005
2006-01-01	5.1977199999999995
2007-01-01	3.4201699999999997
2008-01-01	2.2434800000000000
2009-01-01	1.3693899999999999
2010-01-01	2.4974900000000000
2011-01-01	2.3025100000000000
2012-01-01	3.6190900000000004
2013-01-01	4.5074500000000000
2014-01-01	3.9554300000000002
2015-01-01	2.9352400000000003
2016-01-01	3.0378200000000000